What is the root word of affect?

The root word of "affect" is "fingere", which is a Latin word meaning "to form" or "to shape."

It's interesting to note that "affect" has two different meanings:

1. To influence or produce an effect on: This meaning comes from the French word "affecter," which in turn comes from "fingere."

2. To put on a display of feeling: This meaning is related to the noun "affect," which refers to emotion or feeling. This meaning comes from the Latin word "affectus," which is the past participle of "fingere."

So, even though the root word is the same, the two meanings of "affect" have evolved slightly differently over time.